The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2015
Filed:
Aug. 02, 2011
Yuya Inomata, Tokyo, JP;
Tomoyuki Horio, Tokyo, JP;
Takeshi Nishizono, Tokyo, JP;
Kana Yamamoto, Tokyo, JP;
Yuya Inomata, Tokyo, JP;
Tomoyuki Horio, Tokyo, JP;
Takeshi Nishizono, Tokyo, JP;
Kana Yamamoto, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
The present invention provides an optical layered body having excellent hardness, abrasion resistance, and flexibility. The present invention provides an optical layered body having a hard coat layer on one side of a triacetylcellulose substrate, wherein a Martens hardness (N) of a surface of the hard coat layer, a Martens hardness (N) of the center of the cross-section of the hard coat layer, and a Martens hardness (N) of the center of the cross-section of the triacetylcellulose substrate have a relationship of N>N>Nas determined by nanoindentation, and the hard coat layer has a pencil hardness of 4H or more as measured by a test in accordance with a pencil hardness test defined in JIS K5600-5-4 (1999) at a load of 4.9 N.